dunes grass house shelter wood adaptable alert Alley alley cat aloof appearance appearances carnivorous cat expression expressions eyes felid feline felis catus ginger independent mammal mottled positions posture postures resting social stray stretched suspicious tag whiskers white bird birds color colorful colour colourful columba livia domestica common domestic pigeon fancy pigeons fauna feathers feral gregarious ground feeders iridescence iridescent pests pigeon pigeon pie pigeons plumage plumage varieties prolific rock pigeon variations variety